The only thing I could think of that black people created were things to help what they were ment to do... Cleaning and cooking.... The rolling pin for instance, or dry cleaning...

You are correct, they invented those things which helped them in whatever occupation they were involved in at the time. In this instance, their inventions were mainly of the domestic type. I have no problem with it, I would probably had done the same thing.
We must not forget that a lot of the southern cuisine was a result of black chefs who used local foodstuff to prepare some European/French-type dishes.

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When you find yourself on the side of the majority, you should pause and reflect. - - Mark Twain

Of all the things I’ve lost, I miss my mind the most.” - -
quotes of Mark Twain.

Well, I haven't heard or read about many non-white inventions (excluding asian) . I have heard that George Washington Carver invented peanut butter on accident by running over peanuts with farm equipment. Though according to a large Food Company by the name of Smucker's, Carver DID NOT invent peanut butter. I dont know if he did or not. It really isnt too important either way. I just found the article interesting. Though the media does seem to promote non-whites far above their merit. For instance Einstein is said to have came of with the E=mc square formula. Which was formulated by a British man.

On smuckers.com it states:

"1890 Peanut Butter Invented
An unknown physician from St. Louis first invented peanut butter to provide his patients with an easy-to-digest, high protein food."

"1903 George Washington Carver, Father of the Peanut Industry
Dr. George Washington Carver began his peanut research at Tuskeegee Institute in Alabama. While peanut butter had already been created by then, Dr. Carver developed more than 300 other uses for peanuts and so improved peanut horticulture that he is considered by many to be the father of the peanut industry."

I think the invention of "paper" by the Chinese has been milked for all its got. Every history book I get mentions it as if before then people were still carving on rocks. They stress so frequently that "PAPER WAS GIVEN TO US BY THE ARAB TRADERS AND THUS WE OWE EVERYTHING TO THIS ONE CHINESE GUY FOR INVENTING IT."

First of all, Papyrus (where the word paper comes from) were bound reeves used for a medium of writing, this was invented hundreds and hundreds of years before.

Secondly, papyrus was reformed when the first parchment (animal skin paper) was invented in a Greek city in Turkey caleld Pergamon. Ofcourse, the Greeks get no credit for this! Even though parchment spread like wild-fire after that. During this entire time, the Chinese were writing on bamboo derivatives, which were highly inefficient. Finally, after several hundred successful years of parchment, a Chinese man (usind and indigenous tree to China) created the first paper using a SIMILAR process to the modern production of paper (the modern production was developed in Britain and Germany in the 1700s).
Ofcourse, history books treat it as if we'd all be still living in the stone age if this didn't occur. The way its been blown out of proportion is quite frankly amazing.
Similar inventions have been blown out of proportion as well, notably the Chinese compass. Vikings were infact, the first producers of the compass, (unsurprisingly so, considering they were the first to reach America). Ofcourse, this is given no credit because the Vikings are given the notion of being "savage barbarians." There are many others, but I'll stop here.